[Spread-users] Spread 3.17.3 RC1 test release
jonathan at cnds.jhu.edu
Tue Oct 5 10:54:02 EDT 2004
I wanted to announce a release candidate of the upcoming 3.17.3 release.
This release is a bugfix release with all of the outstanding problems I'm
aware of fixed. Plus a bonus of a working monitor on Windows and
multi-sender flow control in the spflooder application.
You can currently check out the release from cvs using the tag RC1_3_17_3
for the spread module. I will make up a tar.gz release later.
Although all of the substantive changes in the release are bug fixes, some
of them could have unanticipated side-effects if you are using Spread in
ways different from us, or on other platforms. So I highly encourage
anyone who can to test this release with your applications and let me know
about any regressions or issues you encounter.
The list of changes from the Readme.txt file is below.
1) Fix memory leak in Skiplist. Reported by Taj Khattra, patch by Theo
2) spuser,spflooder, and spmonitor fixed to print correct name in help.
Patch by Daniel Rall.
3) Fix incorrect alarm printing where WARNING messages generated by
older Alarm() interface were not printed.
4) Modify monitor so it will run correctly on Windows. This was done by
modifying monitor.c so it can also build as a threaded program and
on windows will use multiple threads to send/recv updates and get
user imput. (A POSIX thread option is also added).
5) Fix a bug in the Windows build using VC++ of thread-safe
Bug and fix by Jacob Green.
6) Fix bug in libspread where if the groups array or message body passed
to SP_recv* was too small, the mess_type field returned would be
and the sender field was not returned. They are both now returned
Bug report and partial fix provided by John Schultz.
7) Fix bug where SP_Join and SP_Leave do not report an error if a group
is too long (instead they truncated it) Reported with fix by David
** Warning, this could break buggy applications who use long groups and
assume the name is truncated.
8) Cleanup compile warnings where E_queue() used with no-parameter
(not all uses fixed) and fix incorrect use of signed int with strlen().
9) Fix few cases in flooder.c and user.c that did not use the defined
constant. Tested to verify that increasing MAX_SCATTER_ELEMENTS in
and the MAX_MESSLEN defines in user.c and flooder.c is sufficient to
arbitrarily large message sizes with Spread. This is NOT recommended,
several people do it anyway :-)
10) Add new option to spflooder. The -n option allows a fixed "number of
to be set. This then activates a multi-sender flow control algorithm
flooding tests with several senders. All of the processes need to join
group (i.e. they cannot be -wo (write-only)) but not all processes
have to send.
This allows easy testing with differing numbers of senders (just
many spflooders start with -ro and how many do not).
11) Make E_delay() work on Win32.
12) Added check that a segment using localhost (i.e. 127.0.0.255) is NOT
spread.conf with any other segments using real IP addresses. This
will not work correctly and is usually because the example localhost
provided with Spread is added to. This check will cause the daemon to
immediately after parsing the config file.
13) Add new Alarm priority flag to print a line with no datestamp (for
14) Fix bug where if more then 22 daemons start at the same time, some
will crash or the
membership will not complete correctly. This bug was reported by
including Jesse Noller.
15) Fix Java spread connection problem where several threaded connections
process cause unexpected connection failures. Reported by Brian
idea of fix by Ryan Caudy, patch by Jonathan Stanton.
16) Fix EVS bug where AGREED messages may be delivered before a
on some daemons and after it on others. Bug found and patch created by
17) Make SP_connect_timeout() calls non-blocking for the actual
This should fix the issue reported by Shlomi Yaakobovich where a hung
causes new connections to also hang in connect. Also includes slight
of connect code path.
Jonathan R. Stanton jonathan at cs.jhu.edu
Dept. of Computer Science
Johns Hopkins University
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